Air quality measuring apparatus



1. Air quality measuring apparatus

1.1 : Perspective

1.2 : Front

1.3 : Back

1.4 : Top

1.5 : Bottom

1.6 : Left

1.7 : Right

An air quality measuring apparatus installed indoor or outdoor is used to measure the concentration of air pollutants and particulate matters; the lower part of the apparatus made of a transparent or translucent material changes its color depending on the status of air quality. 

CLAIM The ornamental design for air quality measuring apparatus, as shown and described. 